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Titolo:
Flow bursts and auroral activations: Onset timing and foot point location
Autore:
Nakamura, R; Baumjohann, W; Brittnacher, M; Sergeev, VA; Kubyshkina, M; Mukai, T; Liou, K;
Indirizzi:
Max Planck Inst Extraterr Phys, D-8046 Garching, Germany Max Planck Inst Extraterr Phys Garching Germany D-8046 Garching, Germany Univ Washington, Geophys Program, Seattle, WA 98195 USA Univ Washington Seattle WA USA 98195 ophys Program, Seattle, WA 98195 USA St Petersburg State Univ, Inst Phys, St Petersburg 198904, Russia St Petersburg State Univ St Petersburg Russia 198904 burg 198904, Russia Johns Hopkins Univ, Appl Phys Lab, Laurel, MD 20723 USA Johns Hopkins Univ Laurel MD USA 20723 ppl Phys Lab, Laurel, MD 20723 USA Inst Space & Aeronaut Studies, Sagamihara, Kanagawa 229, Japan Inst Space & Aeronaut Studies Sagamihara Kanagawa Japan 229 wa 229, Japan
Titolo Testata:
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
fascicolo: A6, volume: 106, anno: 2001,
pagine: 10777 - 10789
SICI:
0148-0227(20010601)106:A6<10777:FBAAAO>2.0.ZU;2-O
Fonte:
ISI
Lingua:
ENG
Soggetto:
SUBSTORM CURRENT WEDGE; CENTRAL PLASMA SHEET; INNER MAGNETOTAIL; BULK FLOWS; GEOTAIL OBSERVATIONS; CURRENT DISRUPTION; FIELD; INTENSIFICATIONS; ASSOCIATION; INJECTIONS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
35
Recensione:
Indirizzi per estratti:
Indirizzo: Nakamura, R Osterreich Akad Wissensch, Inst Weltraumforsch, Schmiedlstr 6,A-8042 Graz, Austria Osterreich Akad Wissensch Schmiedlstr 6 Graz AustriaA-8042 a
Citazione:
R. Nakamura et al., "Flow bursts and auroral activations: Onset timing and foot point location", J GEO R-S P, 106(A6), 2001, pp. 10777-10789

Abstract

Flow burst events with a flux transfer rate exceeding 2 mV/m and with a duration of less than 10 min observed by Geotail are compared with auroral signatures obtained from the Polar ultraviolet imager. It is shown that all the flow bursts correspond either to localized auroral intensifications associated with small poleward expansions and pseudobreakups or to an activation starting at the poleward edge of the expanded auroral oval that develop equatorward toward the foot point of the satellite, including auroral streamers. Earthward flow bursts related to pseudobreakups and small expansions are observed mainly in the region earthward of 15 R-E, more inward than those flows related to high-latitude auroral activations and auroral streamers. Although most of these auroral activations precede the observations of theflow bursts by a few minutes, the activations that break up near the foot point of the satellite start typically within +/-1 min of the onset of flowburst observation.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 10/12/19 alle ore 01:16:56